Labour backbencher Jess Phillips said it defied belief that neither Tory MP had been suspended and urged Mrs May to take action like “any boss of a company would do”.

Alamy

The Commons sex past scandal is expected to shake up Westminster in the same way that the expenses crisis did

As revelations built up last night, experts said there was a real fear across Westminster that the scandal will trigger a wave of resignations.

The Sun has reported how furious female researchers, secretaries and aides working across Parliament have drawn up a secret list of MPs to avoid in Westminster. Mr Garnier vehemently denied his actions in 2010 constituted harassment.

He said his “sugar t*ts” comment was part of an amusing chat about TV comedy Gavin and Stacey.

He said asking Ms Edmondson to buy sex toys in London’s Soho was “good humoured high jinks”.

PA:Press Association

Westminster sex pest scandal was exposed by The Sun

He told The Mail on Sunday one of the vibrators was for his wife and another for a female assistant in his Wyre Forest constituency office in the West Midlands.

He said Ms Edmondson had been using “the incident against me ever since”.

Mr Crabb confirmed he sent “explicit” messages to a 19-year-old he interviewed for a job in 2013 when he was Welsh minister.

Mr Crabb sent “flirtatious” texts and met her for a drink. Yesterday he said he had been foolish but “none of it was meant seriously”. It happened before an incident where he sent messages to a woman, which cost him his Cabinet job.

PA:Press Association

Theresa May wants MPs to be legally bound by their contracts in future cases

Labour’s John Mann said Mr Garnier and Mr Crabb had to be suspended and branded Mrs May’s reaction a joke.

He repeated demands for a new independent watchdog to take on the “Weinsteins of Westminster”. He pointed out that Kathryn Hudson, commissioner for standards in the Commons, was knocked back when she tried to expand anti- harassment policies to include MPs.

He said: “Almost a decade ago, Parliament cleaned up its act over the expenses scandal. Now it is time to take sexual harassment seriously and lance this boil.”

The Sun revealed females working across Whitehall and Parliament shared horror ­stories about sleazy male politicians on a secret WhatsApp group